So I was using the back up 52' walk behind ferris DD hydro and stop it for a second and then when I went to re-engage the blades they wouldn't. Now here is the fun part it has actually had a problem with this for awhile but we always left it because when it was sitting on the trailer at a job. It would be hard for someone to use it if they stole it. So what we always did was just squeeze the wiring harness together to make it tighter and it would the blades would start right up you only needed one hand and it only took a second. But now it is not working at all. Any ideas from anyone on what it could be. So when I am working on it tommorrow night I can check that as well. Thank in advance for any help or ideas.